HomeKit Tempestº Rain Detection

Is there a reason you know of why I can easily determine if the Tempestº has detected rain using a Siri Shortcut but not during the convert to Shortcut function while creating an Apple Automation? The Tempestº is not accessible during that function. It would be great is Apple allowed an automation to call a Siri Shortcut but that isn’t an available option. The Automation Convert to Shortcut would be a second alternative, but for some reason the Tempestº conditions are not an offering during that function. Just looking for insight into the matter… Thanks for any response.